Electronic device

Abstract

An electronic device, comprising a mounting base body (100) and a light source assembly (130), wherein the mounting base body (100) is provided with an accommodating space (101) and a light-transmitting region (1101) which are oppositely arranged; and the light source assembly (130) is located in the accommodating space (101), and the light source assembly (130) comprises an annular light guide member (131) and a light-emitting module (132). The annular light guide member (131) comprises a first light-mixing section (1311), a light guide section (1312) and a second light-mixing section (1313), wherein an end surface of a first end of the first light-mixing section (1311) is a first light incident surface, and a second end of the first light-mixing section (1311) is connected to a first end of the light guide section (1312); an end surface of a first end of the second light-mixing section (1313) is a second light incident surface, and a second end of the second light-mixing section (1313) is connected to a second end of the light guide section (1312); the first light incident surface and the second light incident surface are both arranged opposite the light-emitting module (132); and each of the first light-mixing section (1311) and the second light-mixing section (1313) is of a tapered structure in the direction from the first end thereof to the second end thereof.

Description

electronic devices

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411185870.0, filed on August 27, 2024, entitled “Electronic Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to an electronic device. Background Technology

[0004] With the development of communication technology, electronic devices such as mobile phones and tablets have become indispensable tools for people. When faced with a dazzling array of electronic devices, users not only need to consider whether the functions of the devices meet their needs, but also the appearance of the devices is one of the important factors influencing consumers' purchasing decisions.

[0005] To enhance the visual appeal of electronic devices, they are equipped with light source components. In related technologies, the light source component includes a light-emitting module and a ring-shaped light guide. Both ends of the ring-shaped light guide have light-incident surfaces. Light emitted from the light-emitting module enters the ring-shaped light guide through these light-incident surfaces and then exits through the ring-shaped light guide.

[0006] However, in related technologies, the two ends of the ring light guide need to be reserved with a relatively long area for light mixing. The longer the size of the light mixing area reserved at both ends of the ring light guide, the shorter the actual light-emitting area formed by the ring light guide will be. This will affect the actual light-emitting area of ​​the electronic device, resulting in poor optical performance of the electronic device. Summary of the Invention

[0007] This application provides an electronic device, including: a mounting base having a receiving space and a light-transmitting area, the light-transmitting area being disposed opposite to the receiving space; and a light source assembly located within the receiving space, the light source assembly including an annular light guide and a light-emitting module, the annular light guide including a first light-mixing section, a light-guiding section, and a second light-mixing section, the end face of a first end of the first light-mixing section being a first light-incident surface, and the second end of the first light-mixing section being connected to the first end of the light-guiding section; the end face of the first end of the second light-mixing section being a second light-incident surface, and the second end of the second light-mixing section being connected to the second end of the light-guiding section. The first light-incident surface and the second light-incident surface are both disposed opposite to the light-emitting module; the first light-mixing segment and the second light-mixing segment are both tapered structures in the direction from their first end to their second end; in the extension direction of the light guide segment, the cross-sectional area of ​​the light guide segment along the extension direction perpendicular to the annular light guide is equal; wherein, the light emitted by the light-emitting module enters the corresponding first light-mixing segment or second light-mixing segment through the first light-incident surface or the second light-incident surface, enters the light guide segment through the first light-mixing segment and the second light-mixing segment, and exits from the light-transmitting area after passing through the light guide segment.

[0008] In this embodiment, the first and second light-mixing segments have a tapered structure. Along the extension direction towards the light-guiding segment, the cross-sectional areas of the first and second light-mixing segments gradually decrease, thus increasing the number of reflections of light within the first and second light-mixing segments. Therefore, compared to ring light guides in related technologies, the annular light guide in this application, with the same length, has a shorter distance between the first and second light-mixing segments because the first and second light-mixing segments increase the number of light reflections. This effectively increases the actual size of the light-emitting effect formed by the annular light guide, thereby increasing the actual light-emitting area of ​​the electronic device and improving its optical performance. Attached Figure Description

[0009] Figure 1 is a schematic diagram of a partial structure of the electronic device disclosed in an embodiment of this application;

[0010] Figure 2 is a cross-sectional view of a portion of the structure of the electronic device disclosed in an embodiment of this application;

[0011] Figure 3 is a schematic diagram of the structure of the light source assembly of the electronic device disclosed in an embodiment of this application;

[0012] Figure 4 is a schematic diagram of the structure of the annular light guide of the electronic device disclosed in the embodiment of this application;

[0013] Figure 5 is a partial schematic diagram of the light source assembly of the electronic device disclosed in an embodiment of this application;

[0014] Figures 6 to 8 are partial enlarged views of the annular light guide of the electronic device disclosed in the embodiments of this application;

[0015] Figure 9 is a partial schematic diagram of the annular light guide of the electronic device disclosed in the embodiments of this application;

[0016] Figure 10 is a schematic diagram of the structure of the decorative ring of the electronic device disclosed in the embodiment of this application;

[0017] Figure 11 is a partial enlarged view of Figure 10;

[0018] Figure 12 is a schematic diagram of the structure of the uniform light mask of the electronic device disclosed in the embodiments of this application.

[0019] Explanation of reference numerals in the attached drawings: 100-Mounting base; 101-Accommodation space; 110-Cover plate; 1101-Light-transmitting area; 111-Light-transmitting component; 112-Light-shielding layer; 120-Decorative ring; 121-First reflective surface; 1211-Reflective protrusion; 1212-Reflective gap; 130-Light source assembly; 131-Annular light guide; 13101-First annular light guide; 13102-Second annular light guide; 1311-First light mixing section; 1312-Light guide section; 13121-Second plane; 13122-Second arc-shaped surface; 1313-Second light mixing section; 1314-Light entering section; 1315-Transition section; 13151-First plane. 13152 - First arc-shaped surface, 132 - Light-emitting module, 1321 - First light-emitting element, 1322 - Second light-emitting element, 1323 - Third light-emitting element, 1324 - Fourth light-emitting element, 133 - Reflective microstructure, 134 - Uniform light cover, 1341 - Receiving groove, 1341a - First arc segment, 1341b - Second arc segment, 1341c - First connecting segment, 1341d - Second connecting segment, 135 - Reflective film, 141 - First viewing angle ray, 142 - Second viewing angle ray. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0021] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] The electronic device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0023] Please refer to Figures 1 to 12. This application discloses an electronic device, which includes a mounting base 100 and a light source assembly 130.

[0024] The mounting base 100 provides a mounting foundation for other components of the electronic device. The mounting base 100 includes a receiving space 101 and a light-transmitting area 1101, which is positioned opposite to the receiving space 101. Light emitted from components mounted in the receiving space 101 passes through the light-transmitting area 1101 and is projected outside the receiving space 101. This can be understood as the light-transmitting area 1101 being a portion of the sidewall surrounding the receiving space 101.

[0025] The light source assembly 130 is located within the accommodating space 101. This light source assembly 130 can be a fill light for an electronic device, or it can be a breathing light or ambient light; the specific application scenario of the light source assembly 130 is not limited herein. The light source assembly 130 includes a ring-shaped light guide 131 and a light-emitting module 132. The ring-shaped light guide 131 is a light transmission component. The light emitted by the light-emitting module 132 is transmitted through the ring-shaped light guide 131. Both the ring-shaped light guide 131 and the light-emitting module 132 are disposed within the accommodating space 101. At this time, the light emitted by the light-emitting module 132 enters the ring-shaped light guide 131 through the light-incident surfaces at both ends of the ring-shaped light guide 131, and after passing through the ring-shaped light guide 131, it is projected out of the electronic device through the light-transmitting area 1101. The light-emitting module 132 can be an LED (Light Emitting Diode) lamp, a high-pressure sodium lamp, a metal halide lamp, etc.; of course, the light-emitting module 132 can also have other structures, which are not limited herein.

[0026] Specifically, the annular light guide 131 includes a first light mixing section 1311, a light guide section 1312, and a second light mixing section 1313. The end face of the first end of the first light mixing section 1311 is a first light incident surface, and the second end of the first light mixing section 1311 is connected to the first end of the light guide section 1312. The end face of the first end of the second light mixing section 1313 is a second light incident surface, and the second end of the second light mixing section 1313 is connected to the second end of the light guide section 1312. Both the first light incident surface and the second light incident surface are positioned opposite to the light emitting surface of the light-emitting module 132. At this time, the first light mixing section 1311 and the second light mixing section 1313 are located at both ends of the light guide section 1312.

[0027] In the specific light emission process, the light emitted by the light emission module 132 enters the corresponding first light mixing section 1311 or second light mixing section 1313 through the first light incident surface or the second light incident surface, enters the light guide section 1312 through the first light mixing section 1311 and the second light mixing section 1313, and exits from the light transmission area 1101 after passing through the light guide section 1312.

[0028] In the embodiments disclosed in this application, the first light-mixing segment 1311 has a tapered structure in the direction from its first end to its second end. That is, in the direction from the first light-mixing segment 1311 to the light-guiding segment 1312, the cross-sectional area of ​​the first light-mixing segment 1311 gradually decreases along the extension direction perpendicular to the annular light guide 131. Alternatively, it can be understood that the end face of the first light-mixing segment 1311 facing the light-emitting module 132 is larger than the end face of the first light-mixing segment 1311 connected to the light guide segment 1312. In this case, the cross-sectional area of ​​the light-incident end of the first light-mixing segment 1311 is larger than the cross-sectional area of ​​the light-emitting end of the first light-mixing segment 1311. Here, the light-incident end of the first light-mixing segment 1311 refers to the end where the first light-incident surface is located, while the light-emitting end of the first light-mixing segment 1311 refers to the connection end with the light guide segment 1312.

[0029] Similarly, the second light-mixing segment 1313 has a tapered structure in the direction from its first end to its second end. That is, in the direction from the first end to the second end of the light-guiding segment 1313, the cross-sectional area of ​​the second light-mixing segment 1313 gradually decreases along the extension direction perpendicular to the annular light guide 131. Alternatively, it can be understood that the end face of the second light-mixing segment 1313 facing the light-emitting module 132 is larger than the end face of the second light-mixing segment 1313 connected to the light guide segment 1312. In this case, the cross-sectional area of ​​the light-incident end of the second light-mixing segment 1313 is larger than the cross-sectional area of ​​the light-emitting end of the second light-mixing segment 1313. Here, the light-incident end of the second light-mixing segment 1313 refers to the end where the second light-incident surface is located, while the light-emitting end of the second light-mixing segment 1313 refers to the connection end with the light guide segment 1312.

[0030] Furthermore, in the extending direction of the light guide segment 1312, the cross-sectional area of ​​the light guide segment 1312 along the extending direction perpendicular to the annular light guide member 131 is equal. At this time, the dimensions of each local area of ​​the light guide segment 1312 are the same.

[0031] In the embodiments disclosed in this application, the first light-mixing segment 1311 and the second light-mixing segment 1313 are tapered structures. Therefore, along the extension direction toward the light-guiding segment 1312, the cross-sectional areas of the first light-mixing segment 1311 and the second light-mixing segment 1313 gradually decrease, thereby increasing the number of reflections of light within the first light-mixing segment 1311 and the second light-mixing segment 1313. Therefore, under the condition that the length of the annular light guide 131 in this application is the same as that in the related art, since the first light-mixing segment 1311 and the second light-mixing segment 1313 of the annular light guide 131 in this application can increase the number of reflections of light, the distance between the first light-mixing segment 1311 and the second light-mixing segment 1313 is shorter, thereby effectively increasing the actual light-emitting area formed by the annular light guide 131, and thus increasing the actual light-emitting area of ​​the electronic device, thereby improving the optical performance of the electronic device.

[0032] In addition, when the length of the light mixing region is the same as that of the annular light guide 131 in the related art, the annular light guide 131 disclosed in this application has better light mixing performance, thus enabling the color and brightness distribution of the light emitted by the electronic device to be more uniform.

[0033] Furthermore, in this application, both the first light mixing segment 1311 and the second light mixing segment 1313 have a light-incident surface area that is larger than the end face area of ​​the end connected to the light guide segment 1312. Therefore, the size of the light-incident surface is larger, which allows as much light emitted by the light-emitting module 132 as possible to enter the annular light guide 131, thus improving the light utilization rate and the brightness of the electronic device.

[0034] The electronic device disclosed in this application can both increase the actual light-emitting area of ​​the electronic device and effectively improve the light-emitting brightness of the electronic device.

[0035] In one embodiment, the light-emitting module 132 may include a light-emitting element. In this case, both the first light-incident surface and the second light-incident surface are positioned opposite to the light-emitting surface of the light-emitting element.

[0036] In another alternative embodiment, the light-emitting module 132 may include a first light-emitting element 1321 and a second light-emitting element 1322, with a first light-incident surface opposite to the light-emitting surface of the first light-emitting element 1321. A second light-incident surface is also opposite to the light-emitting surface of the second light-emitting element 1322. The annular light guide 131 disclosed in this application is an arc-shaped strip structure, in which case there is a gap between the first light-incident surface and the second light-incident surface, which is used to arrange the first light-emitting element 1321 and the second light-emitting element 1322.

[0037] The shape of the annular light guide 131 placed within the receiving space 101 is shown in Figure 3. The annular light guide 131 can be made of a rigid light-transmitting material, such as glass. In this case, the shape of the annular light guide 131 is the same as the shape of the receiving space 101. Of course, the annular light guide 131 can also be made of a flexible light-transmitting material, such as optical fiber. When the annular light guide 131 is not placed in the receiving space 101, it can be a flexible straight strip structure. When placed in the receiving space 101, the shape of the receiving space 101 controls the shape of the annular light guide 131, so that the annular light guide 131 forms a ring structure.

[0038] In the above embodiments, the first light mixing segment 1311 and the second light mixing segment 1313 are tapered structures. That is, the first light mixing segment 1311 and the second light mixing segment 1313 gradually taper from their first end to their second end. Therefore, the first light mixing segment 1311 and the second light mixing segment 1313 are tapered structures as a whole.

[0039] In another optional embodiment, both the first light mixing section 1311 and the second light mixing section 1313 may include a light-incident section 1314 and a transition section 1315. The end of the light-incident section 1314 facing away from the transition section 1315 may have a first light-incident surface or a second light-incident surface. In this case, the light-incident section 1314 corresponding to the first light mixing section 1311 has a first light-incident surface, and the light-incident section 1314 corresponding to the second light mixing section 1313 has a second light-incident surface. The light-incident section 1314 is connected to the light guide section 1312 through the transition section 1315. The cross-sectional area of ​​the transition section 1315 along the extension direction perpendicular to the annular light guide 131 is smaller than that of the light-incident section 1314 along the extension direction perpendicular to the annular light guide 1311. In the extension direction of the light-incident section 1314 toward the transition section 1315, the cross-sectional area of ​​the transition section 1315 along the extension direction perpendicular to the annular light guide 131 gradually decreases. At this point, the section with the largest cross-sectional area of ​​the transition section 1315 is the connection end with the light-incoming section 1314.

[0040] In this design, the cross-sectional area of ​​the transition section 1315 gradually decreases, thus the transition section 1315 has a tapered structure. This allows the cross-sectional area of ​​the light-incoming section 1314 to be larger, making it easier to fix both ends of the annular light guide 131, thereby reducing the assembly difficulty of the electronic device.

[0041] In another alternative scheme, the cross-sectional area of ​​the light-incoming section 1314 is the same along the extension direction perpendicular to the annular light guide 131. Therefore, the light-incoming section 1314 has the same dimensions in terms of radius, area, etc. along its axial direction. In this case, the area of ​​the light-mixing section gradually shrinks to form the transition section 1315.

[0042] In another alternative scheme, the cross-sectional area of ​​the light-incoming section 1314 decreases along the extension direction perpendicular to the annular light guide 131, and the rate of decrease in the cross-sectional area of ​​the light-incoming section 1314 is less than the rate of decrease in the cross-sectional area of ​​the transition section 1315. In this case, the tapering rate of the light-incoming end is slower, resulting in a smaller area difference between the opposite ends of the light-incoming end. Conversely, the tapering rate of the transition section 1315 is faster, resulting in a larger area difference between the opposite ends of the transition section 1315. In this case, both the light-incoming section 1314 and the transition section 1315 are tapered structures, but the tapering rate of the light-incoming section 1314 is smaller, resulting in a larger circumferential area, thus facilitating fixation. Furthermore, the tapered structure of both the light-incoming section 1314 and the transition section 1315 further improves the light mixing performance.

[0043] In the above scheme, the cross-sectional shape of both the light-incoming section 1314 and the transition section 1315 can be circular. In this case, the annular light guide 131 can be processed by casting, lathe turning, or other methods to form the first light-mixing section 1311 and the second light-mixing section 1313 with a tapered structure.

[0044] In another alternative embodiment, the light-incoming segment 1314 can be a cylindrical structure. In this case, the cross-sectional shape of the light-incoming segment 1314 along its extension direction is circular. The outer surface of the transition segment 1315 includes a first plane 13151 and a first arcuate surface 13152 connected circumferentially. In the extension direction of the light-incoming segment 1314 toward the transition segment 1315, the first arcuate surface 13152 has the same radius along the cross-section perpendicular to the extension direction of the annular light guide 131, and the distance between the first plane 13151 and the first arcuate surface 13152 gradually decreases. Here, the distance between the first plane 13151 and the first arcuate surface 13152 can be understood as the distance between the center of the first arcuate surface 13152 and the perpendicular line between the first plane 13151 and the first arcuate surface 13152. Alternatively, a first edge line extending along the extension direction of the transition segment 1315 can be defined on the first arcuate surface 13152, and a second edge line extending along the extension direction of the transition segment 1315 can be defined on the first plane 13151. The perpendicular distance between the first edge line and the second edge line is the distance between the first plane 13151 and the first arcuate surface 13152.

[0045] The radius of the cross section of the first arc-shaped surface 13152 along the extension direction perpendicular to the annular light guide 131 is the same as the radius of the cross section of the light-entry section 1314 along the extension direction perpendicular to the annular light guide 131.

[0046] At this time, the radius of the cross section of the light-inlet segment 1314 is the same as the radius of the cross section of the first arc surface 13152 of the transition segment 1315. Therefore, in the specific manufacturing process, the light-inlet segment 1314 and the transition segment 1315 are cylindrical structures with the same radius. Then, a plane is obliquely cut off on the transition segment 1315. During the cutting process, the cutting depth gradually increases along the direction from the light-inlet segment 1314 to the transition segment 1315. After cutting, the first plane 13151 is formed, so that the transition segment 1315 forms a conical structure with one end large and the other end small.

[0047] This design simplifies the manufacturing process of the annular light guide 131, thereby reducing its manufacturing cost. Furthermore, the planar structure further enhances light reflection performance, thus further improving the brightness of the light emitted by the electronic device.

[0048] In another alternative embodiment, the cross-sectional area of ​​the light guide segment 1312 along the extension direction perpendicular to the annular light guide 131 is the same as the area of ​​the second end face of the first light mixing segment 1311 and the second end face of the second light mixing segment 1313. This can also be understood as the contour shape of the cross-section of the light guide segment 1312 along the extension direction perpendicular to the annular light guide 131 being the same as the contour shape of the second end face of the first light mixing segment 1311 and the second end face of the second light mixing segment 1313.

[0049] In this scheme, since the two ends of the light guide segment 1312 are connected to the first light mixing segment 1311 and the second light mixing segment 1313 respectively, the area of ​​the end face of the light guide segment 1312 is the same as the area of ​​the second end face of the first light mixing segment 1311 and the second end face of the second light mixing segment 1313. Therefore, the mixed light can fill the light guide segment 1312, thereby avoiding the appearance of areas with different brightness in the light guide segment 1312, thus further improving the uniformity of light effect.

[0050] In another alternative embodiment, the light guide segment 1312 has a plurality of spaced-apart reflective microstructures 133 along its extension direction. In this case, light from the first mixing segment 1311 and the second mixing segment 1313 enters the light guide segment 1312 and is reflected by the reflective microstructures 133 on the light guide segment 1312 before exiting from the annular light guide 131. The reflective microstructures 133 are used to improve light emission from the annular light guide 131. The reflective microstructures 133 are either recessed structures etched into the annular light guide 131 or protrusions on the surface of the annular light guide 131. The reflective microstructures 133 can reflect and refract light. When light enters the light guide segment 1312, most of the light is transmitted along the extension direction of the light guide segment 1312, thus allowing the light to be conducted within the light guide segment 1312 without overflowing, thereby reducing the brightness of the light source assembly 130. This application provides a reflective microstructure 133 on the light guide segment 1312 of the annular light guide 131. The reflective microstructure 133 can cause a drastic change in the reflection angle of the light incident on the light guide segment 1312, thereby allowing the light to overflow the light guide segment 1312 and thus improving the brightness of the light source assembly 130.

[0051] In one embodiment, as shown in Figure 6, the reflective microstructure 133 can be a convex spherical microstructure, wherein the radius of curvature of the spherical microstructure ranges from 0.04 mm to 0.1 mm, and the spherical sagitta ranges from 0.02 mm to 0.05 mm.

[0052] In another embodiment, as shown in Figure 7, the reflective microstructure 133 can be a convex cylindrical microstructure, with the cylindrical length ranging from 0.08 mm to 0.15 mm and the cylindrical height ranging from 0.02 mm to 0.05 mm.

[0053] In another alternative scheme, as shown in Figure 8, the reflective microstructure 133 can be a concave frustum microstructure, with the lower base radius ranging from 0.02 mm to 0.08 mm, the upper base radius ranging from 0.04 mm to 0.16 mm, and the height ranging from 0.02 mm to 0.05 mm.

[0054] In one alternative embodiment, the light guide segment 1312 can be a cylindrical structure. In this case, the reflective microstructure 133 can be disposed on the outer wall of the light guide segment 1312. The light guide segment 1312 can have a light-emitting side facing the light-transmitting region 1101 and a reflective side away from the light-transmitting region 1101, and the reflective microstructure 133 can be disposed on the light-emitting side or the reflective side.

[0055] For example, when the reflective microstructure 133 is located on the reflective side, light rays are incident on the reflective microstructure 133 and reflected from the reflective side to the light-emitting side by the reflective microstructure 133, and then emitted from the light-emitting side through the light guide section 1312. At this time, the light rays can be emitted from the light-emitting side after one reflection by the reflective microstructure 133 located on the reflective side, thus making the light transmission path shorter.

[0056] For example, the reflective microstructure 133 can be located on the light-emitting side. In this case, when light is incident on the reflective microstructure 133, the light is reflected from the light-emitting side to the reflective side by the reflective microstructure 133, and then reflected by the reflective side and the sidewall of the accommodating space 101 before being directed to the light-emitting side, and then the light guide section 1312 is emitted from the light-emitting side.

[0057] In another alternative embodiment, the outer surface of the light guide segment 1312 may include a second plane 13121 and a second arcuate surface 13122 connected circumferentially thereon, the second plane 13121 being provided with a reflective microstructure 133. In this solution, the plane makes it easier to fabricate the reflective microstructure 133, thereby reducing the difficulty of the manufacturing process.

[0058] In the specific manufacturing process, the cylindrical light guide material is cut along the axial direction to cut out the second plane 13121 mentioned above. The outer surface of the remaining part of the cylindrical light guide material is the second arc-shaped surface 13122 mentioned above.

[0059] Furthermore, the second plane 13121 can be located on the side of the light guide section 1312 opposite to the light-transmitting area 1101. In this case, the second plane 13121 is located on the reflective side of the light guide section 1312. Therefore, the reflective microstructure 133 is located on the reflective side. In this scheme, light can be emitted from the light-emitting side after one reflection by the reflective microstructure 133 located on the reflective side, thus making the light transmission path shorter.

[0060] In another alternative embodiment, the density of the reflective microstructures 133 decreases from the middle of the light guide segment 1312 to both ends. Here, the density of the reflective microstructures 133 is understood as the number of reflective microstructures 133 per unit area. In this case, the closer the light guide segment 1312 is to its end along its extension direction, the fewer the number of reflective microstructures 133; the farther away from the end, the more reflective microstructures 133 there are. In this scheme, the closer the light guide segment 1312 is to its end along its extension direction, the stronger its luminous efficiency, thus requiring a reduction in the number of reflective microstructures 133 to decrease the light output brightness in that area. Conversely, the farther the light guide segment 1312 is from its end along its extension direction, the less light it transmits, thus requiring an increase in the number of reflective microstructures 133 to increase the amount of light reflected, thereby improving the light output brightness in that area. Therefore, setting different densities of reflective microstructures 133 in different areas of the light guide segment 1312 can further improve the light output uniformity of the electronic device.

[0061] In another alternative embodiment, the first plane 13151 and the second plane 13121 can be disposed on the same side of the annular light guide 131. In this case, the profile shape of the cross-section of the light guide segment 1312 along the extension direction perpendicular to the annular light guide 131 is the same as the profile of the second end face of the first light mixing segment 1311 and the second light mixing segment 1313. In this case, the annular light guide 131 can be made from a cylindrical light guide substrate. Specifically, a cylindrical light guide substrate with a preset radius is selected, and then the preset lengths of the first light mixing segment 1311, the light guide segment 1312, and the second light mixing segment 1313 are divided. Then, the surface of the cylindrical light guide substrate is cut. First, an oblique cut is made to cut out the first plane 13151 corresponding to the first light mixing segment 1311. Then, a parallel cut is made to remove the second plane 13121. Finally, an oblique cut is made to cut out the first plane 13151 corresponding to the second light mixing segment 1313. The cutting depth at the end of the first plane 13151 is the cutting depth of the second plane 13121.

[0062] In another alternative, the first plane 13151 and the second plane 13121 are both located on the side of the annular light guide 131 away from the light-transmitting area 1101.

[0063] In another optional embodiment, as shown in FIG3, the number of annular light guides 131 can be at least two, namely a first annular light guide 13101 and a second annular light guide 13102; the first annular light guide 13101 and the second annular light guide 13102 can be arranged side by side. The first annular light guide 13101 and the second annular light guide 13102 are arranged opposite each other on the side facing the light-emitting module 132. At this time, the light guide segments 1312 of the first annular light guide 13101 and the second annular light guide 13102 can form an annular light guide structure. The corresponding first light-incident surfaces and second light-incident surfaces of the first annular light guide 13101 and the second annular light guide 13102 are both arranged opposite to the light-emitting module 132.

[0064] This solution can further increase the effective light-emitting surface of the electronic device, thereby further improving the light emission performance of the electronic device. In addition, the two light guide segments 1312 of the first annular light guide 13101 and the second annular light guide 13102 can be spliced ​​to form a complete annular light ring, thus making the light emission effect of the electronic device more aesthetically pleasing, thereby improving the appearance performance of the electronic device.

[0065] In the above embodiments, the light-emitting module 132 may include a light source driver, a first light-emitting element 1321, a second light-emitting element 1322, a third light-emitting element 1323, and a fourth light-emitting element 1324. The first light-emitting element 1321, the second light-emitting element 1322, the third light-emitting element 1323, and the fourth light-emitting element 1324 are all disposed on the light source driver, which controls these four light-emitting elements. At this time, the first light-emitting element 1321 and the second light-emitting element 1322 correspond to the first annular light guide 13101. The first light-incident surface of the first annular light guide 13101 is opposite to the light-emitting surface of the first light-emitting element 1321, and the second light-incident surface of the first annular light guide 13101 is opposite to the light-emitting surface of the second light-emitting element 1322. The third light-emitting element 1323 and the fourth light-emitting element 1324 correspond to the second annular light guide element 13102. The first light-incident surface of the second annular light guide element 13102 is arranged opposite to the light-emitting surface of the third light-emitting element 1323, and the second light-incident surface of the second annular light guide element 13102 is arranged opposite to the light-emitting surface of the fourth light-emitting element 1324.

[0066] In the above embodiments, the lengths of the first annular light guide 13101 and the second annular light guide 13102 can be the same. In this case, the first annular light guide 13101 and the second annular light guide 13102 have a symmetrical structure.

[0067] In another optional embodiment, the length of the first annular light guide 13101 can be a first length, and the maximum density of the reflective microstructures 133 on the first annular light guide 13101 is a first density. The length of the second annular light guide 13102 is a second length, and the maximum density of the reflective microstructures 133 on the second annular light guide 13102 is a second density. The ratio between the first length and the first density is equal to the ratio between the second length and the second density. Since the density of the reflective microstructures 133 at the middle position of the light guide segment 1312 of the annular light guide 131 is the largest, the maximum density here can be the density of the reflective microstructures 133 at the middle position of the light guide segment 1312.

[0068] In this scheme, when the lengths of the first annular light guide 13101 and the second annular light guide 13102 are not equal, the density distribution of the reflective microstructures 133 of the first annular light guide 13101 and the second annular light guide 13102 also needs to be designed to be unequal. According to the principle of energy conservation, the relationship between the total length L of the annular light guide 131 and the maximum density ρ of the microstructures must satisfy L1 / ρ1=L2 / ρ2, where L1 and L2 are the lengths of the first annular light guide 13101 and the second annular light guide 13102, respectively, and ρ1 and ρ2 are the maximum densities of the reflective microstructures 133 of the first annular light guide 13101 and the second annular light guide 13102, respectively. This can be understood as follows: when the length of the annular light guide 131 is longer, the density of the reflective microstructures 133 needs to be increased, thereby improving the light output brightness of the annular light guide 131. When the length of the annular light guide 131 is short, the density of the reflective microstructure 133 needs to be reduced, thereby decreasing the light output brightness of the annular light guide 131. This makes the light output brightness of the first annular light guide 13101 and the second annular light guide 13102 similar. Therefore, even when the lengths of the first annular light guide 13101 and the second annular light guide 13102 are unequal, the effect of uniform light emission throughout the entire annular region can be achieved, thus further improving the light output uniformity of the electronic device.

[0069] In the above embodiments, when the radius of curvature of the light guide segment 1312 is small, light can easily escape from the light guide segment 1312, resulting in localized brightness and thus causing uneven brightness and color in the light effect of the electronic device. Here, the radius of curvature of the light guide segment 1312 refers to the degree of bending of the light guide segment 1312.

[0070] Based on this, in another alternative scheme, the radii of both the first and second light-incident surfaces can be a first dimension. The radius of curvature of the light guide segment 1312 is a second dimension, and the radius of curvature of the light guide segment 1312 is R as shown in Figure 3. In this case, the second dimension can be greater than or equal to 4 times the first dimension, and less than or equal to 6 times the first dimension.

[0071] This design ensures that light does not escape from the bend, thus avoiding localized brightness and further improving the brightness and color uniformity of the electronic device's luminous efficacy.

[0072] In another optional embodiment, a first reflective surface 121 is provided within the accommodating space 101, and the first reflective surface 121 may be disposed opposite to the light-transmitting area 1101. The first reflective surface 121 may be disposed around the annular light guide 131. Light emitted through the light guide section 1312 and reflected by the first reflective surface 121 and then emitted from the light-transmitting area 1101 can be a first viewing angle light 141. Light emitted through the light guide section 1312 and emitted directly from the light-transmitting area 1101 without being reflected by the first reflective surface 121 can be a second viewing angle light 142.

[0073] In this scheme, the light emitted by the light-emitting module 132 enters the annular light guide 131 for guidance. Of the light emitted through the annular light guide 131, part is reflected by the first reflecting surface 121 and then exits through the light-transmitting area 1101, while the other part exits directly through the light-transmitting area 1101 without being reflected by the first reflecting surface 121. At this time, the light emitted through the annular light guide 131 can form two transmission paths. The light reflected by the first reflecting surface 121 has a lower brightness due to the increased number of reflections; while the light that exits directly through the light-transmitting area 1101 without being reflected by the first reflecting surface 121 has a higher brightness. Therefore, the brightness of the first viewing angle light 141 and the second viewing angle light 142 are different. Thus, different optical effects can be observed at different viewing angles, thereby improving the optical performance of the electronic device.

[0074] In another alternative embodiment, the mounting base 100 may include a cover plate 110 and a decorative ring 120, the cover plate 110 having a light-transmitting area 1101. The decorative ring 120 and the cover plate 110 may form a receiving space 101. The inner surface of the decorative ring 120 may be provided with a first reflective surface 121. In this solution, the light source assembly 130 is disposed on the decorative ring 120, thereby detaching the light source assembly 130 from the internal space of the electronic device, thus optimizing the layout of the electronic device.

[0075] In the above embodiments, the mounting base 100 can be a decorative part of the camera module. In this case, the mounting base 100 is used to decorate the camera module. At this time, the annular area formed by the annular light guide 131 can be opposite to the lens of the camera module, so that external light enters the camera module through the light-transmitting area 1101 and the annular area formed by the annular light guide 131, thereby realizing the camera module's imaging function.

[0076] The aforementioned mounting base 100 can also be the device housing of an electronic device. Here, the light-transmitting area 1101 can be a light-transmitting area opened on the device housing, and the accommodating space 101 is the internal space of the device housing.

[0077] In another alternative embodiment, the light source assembly 130 may further include a light-diffusing mask 134, which may be located within the receiving space 101, and a first reflective surface 121 may be arranged around the light-diffusing mask 134. An annular light guide 131 may be located within the light-diffusing mask 134. The light emitted via the light guide section 1312, passing sequentially through the light-diffusing mask 134 and the first reflective surface 121, and then exiting from the light-transmitting area 1101, is the first viewing angle light 141. The light emitted via the light guide section 1312, passing through the light-diffusing mask 134, and then exiting directly from the light-transmitting area 1101 without reflection from the first reflective surface 121, is the second viewing angle light 142.

[0078] In this scheme, the uniform light mask 134 can block the uneven hot spots from the reflective microstructure 133 on the annular light guide 131, thereby further improving the light output uniformity of the electronic device.

[0079] Optionally, the light-diffusing mask 134 can be made of transparent plastic or transparent glass. To achieve the light-diffusing effect of the light-diffusing mask 134, all surfaces of the light-diffusing mask 134 can be textured. Alternatively, scattering particles can be added to the transparent material to achieve light uniformity, with the particle size of the scattering particles being 1μm-10μm.

[0080] The light-diffusing mask 134 in the above embodiments can have corresponding holes for the camera module to receive external light.

[0081] In the above embodiment, the light-diffusing mask 134 can completely enclose the light guide section 1312. In this case, part of the light passing through the outer wall of the light-diffusing mask 134 is reflected by the first reflective surface 121 to form a first viewing angle light 141. Meanwhile, another part of the light passing through the top and outer wall of the light-diffusing mask 134 is not reflected by the first reflective surface 121 to form a second viewing angle light 142. In this scheme, light can also be emitted from the top of the light-diffusing mask 134.

[0082] In another optional embodiment, the light-diffusing mask 134 has a receiving groove 1341 on the side facing the cover plate 110, and the annular light guide 131 can be located within the receiving groove 1341. The cover plate 110 may include a light-shielding layer 112 and a light-transmitting element 111, and the light-transmitting element 111 can form the aforementioned receiving space 101 with the decorative ring 120. Here, the light-transmitting element 111 can be a lens. The light-transmitting element 111 has a first region and a second region, and the first region can be arranged around the second region. The first region is the aforementioned light-transmitting region 1101. The second region is provided with a light-shielding layer 112, which covers the opening of the receiving groove 1341.

[0083] At this time, light is emitted from the outer wall of the uniform light mask 134, that is, the light passes through the outer wall of the receiving groove 1341. No light is emitted from the top of the uniform light mask 134.

[0084] In this design, no light is emitted from the top of the light-diffusing mask 134, thus avoiding any impact on the camera module. Furthermore, the open structure of the light-diffusing mask 134 facilitates its manufacture, thereby reducing the manufacturing cost of the electronic device.

[0085] In a configuration where there are two annular light guides 131, the receiving groove 1341 may include a first arc segment 1341a, a second arc segment 1341b, a first connecting segment 1341c, and a second connecting segment 1341d. The first connecting segment 1341c and the second connecting segment 1341d are located between the first arc segment 1341a and the second arc segment 1341b. Here, the first connecting segment 1341c can be used to accommodate the first light mixing segment 1311 of the aforementioned first annular light guide 13101 and second annular light guide 13102. The second connecting segment 1341d can be used to accommodate the second light mixing segment 1313 of the aforementioned first annular light guide 13101 and second annular light guide 13102. The first arc segment 1341a can be used to accommodate the light guiding segment 1312 of the first annular light guide 13101. The second arc segment 1341b can be used to accommodate the light guiding segment 1312 of the second annular light guide 13102.

[0086] In the above scheme, the light-shielding layer 112 also needs to have corresponding openings so that external light can enter the camera module through the second area and the openings.

[0087] In another alternative embodiment, the light source assembly 130 may further include a reflective film 135 disposed at the bottom of the receiving groove 1341. The reflective film 135 may have a second reflective surface, which may be disposed opposite to the annular light guide 131. In this embodiment, the reflective film 135 can reflect the light overflowing from the annular light guide 131 back into the annular light guide 131 or the light uniform cover 134, thereby improving the utilization rate of light energy and thus improving the output brightness of the electronic device.

[0088] Optionally, the reflective film 135 is made of polyethylene terephthalate (PET), and the surface color can be white with a reflectivity of ≥80%.

[0089] The inner walls of the light-shielding layer 112 and the receiving groove 1341 may also be provided with reflective structures, which is not limited in this article.

[0090] In another alternative embodiment, the first reflective surface 121 is inclined toward the center of the receiving space 101 in the extending direction of the light-transmitting area 1101 toward the light source assembly 130. In this case, the cross-sectional area of ​​the first reflective surface 121 is reduced in the extending direction of the light area toward the light source assembly 130. This can also be understood as the first reflective surface 121 being inclined relative to the plane containing the light-transmitting area 1101. This solution achieves highly efficient reflection, thereby further improving light utilization efficiency.

[0091] Optionally, the angle between the plane containing the light-transmitting area 1101 and the first reflective surface 121 is between 15° and 25°. In this case, as shown in Figure 2, the angle between the first reflective surface 121 and the plane containing the light-transmitting area 1101 is α, and the angle α can be between 15° and 25°. This scheme can further improve the reflectivity.

[0092] In another alternative scheme, the first reflective surface 121 can be provided with multiple reflective protrusions 1211, which can be arranged at intervals along the circumference of the first reflective surface 121. A reflective gap 1212 can be formed between any two adjacent reflective protrusions 1211. In this scheme, when incident light from the same direction is incident on different positions of the first reflective surface 121, the reflective efficiency of the reflective protrusions 1211 and the reflective gaps is different, resulting in a large difference in the direction and brightness of the emitted light (as shown in emission direction A and emission direction B in Figure 11). This enables the electronic device to achieve a light emission effect with alternating bright and dark reflections, thereby further improving the optical performance of the electronic device.

[0093] Optionally, the first reflecting surface 121 can be a straight surface, a circular arc surface, or an aspherical surface, etc. Of course, the first reflecting surface 121 can also be other surface types, which will not be elaborated here.

[0094] The electronic devices disclosed in this application can be smartphones, tablets, e-book readers, wearable devices (such as smartwatches), video game consoles, etc. This application does not limit the specific types of electronic devices. The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. An electronic device, wherein, include: The mounting base is provided with a receiving space and a light-transmitting area, and the light-transmitting area is arranged opposite to the receiving space. A light source assembly is located within the accommodating space. The light source assembly includes an annular light guide and a light-emitting module. The annular light guide includes a first light-mixing segment, a light-guiding segment, and a second light-mixing segment. The end face of the first end of the first light-mixing segment is a first light-incident surface, and the second end of the first light-mixing segment is connected to the first end of the light-guiding segment. The end face of the first end of the second light-mixing segment is a second light-incident surface, and the second end of the second light-mixing segment is connected to the second end of the light-guiding segment. Both the first light-incident surface and the second light-incident surface are disposed opposite to the light-emitting module. Both the first light-mixing segment and the second light-mixing segment have a tapered structure in the direction from their first end to their second end. In the extension direction of the light-guiding segment, the cross-sectional area of ​​the light-guiding segment along the extension direction perpendicular to the annular light guide is equal. The light emitted by the light-emitting module enters the corresponding first light mixing section or second light mixing section through the first light-incident surface or the second light-incident surface, enters the light guide section through the first light mixing section and the second light mixing section, and exits from the light-transmitting area after passing through the light guide section.

2. The electronic device according to claim 1, wherein, Both the first light mixing section and the second light mixing section include a light-incoming section and a transition section. The end of the light-incoming section opposite to the transition section has a first light-incident surface or a second light-incident surface. The light-incoming section is connected to the light guide section through the transition section. The cross-sectional area of ​​the transition section along the extension direction perpendicular to the annular light guide is smaller than the cross-sectional area of ​​the light-incoming section along the extension direction perpendicular to the annular light guide. In the extension direction of the light-incoming section toward the transition section, the cross-sectional area of ​​the transition section along the extension direction perpendicular to the annular light guide gradually decreases.

3. The electronic device according to claim 2, wherein, The light-inlet section is a cylindrical structure; the outer surface of the transition section includes a first plane and a first arc-shaped surface connected circumferentially. In the extension direction of the light-inlet section toward the transition section, the radius of the first arc-shaped surface along the cross-section perpendicular to the extension direction of the annular light guide is the same, and the distance between the first plane and the first arc-shaped surface gradually decreases; the radius of the cross-section of the first arc-shaped surface along the extension direction of the annular light guide is the same as the radius of the cross-section of the light-inlet section along the extension direction of the annular light guide.

4. The electronic device according to claim 2, wherein, The cross-sectional area of ​​the light guide segment along the extension direction perpendicular to the annular light guide is the same as the area of ​​the second end face of the first light mixing segment and the second end face of the second light mixing segment.

5. The electronic device according to claim 1 or 4, wherein, The light guide segment has multiple spaced-apart reflective microstructures along its extension direction; after the light from the first light mixing segment and the second light mixing segment enters the light guide segment, it is reflected by the reflective microstructures on the light guide segment and then emitted from the annular light guide.

6. The electronic device according to claim 5, wherein, The outer surface of the light guide segment includes a second plane and a second arcuate surface connected along its circumference, and the second plane is provided with the reflective microstructure.

7. The electronic device according to claim 6, wherein, The second plane is located on the side of the light guide segment that is away from the light-transmitting area.

8. The electronic device according to claim 5, wherein, The density of the reflective microstructure decreases from the middle of the light guide segment toward both ends of the light guide segment.

9. The electronic device according to claim 8, wherein, The number of the annular light guides is at least two, namely a first annular light guide and a second annular light guide; the first annular light guide and the second annular light guide are arranged side by side, and the first annular light guide and the second annular light guide are arranged opposite each other on the side facing the light-emitting module, and the corresponding first light-incident surface and second light-incident surface of the first annular light guide and the second annular light guide are both arranged opposite to the light-emitting module.

10. The electronic device according to claim 9, wherein, The length of the first annular light guide is a first length, and the maximum density of the reflective microstructure on the first annular light guide is a first density; the length of the second annular light guide is a second length, and the maximum density of the reflective microstructure on the second annular light guide is a second density, and the ratio between the first length and the first density is equal to the ratio between the second length and the second density.

11. The electronic device according to claim 1, wherein, The radii of the first light-incident surface and the second light-incident surface are both of a first dimension, and the radius of curvature of the light guide segment is a second dimension. The second dimension is greater than or equal to 4 times the first dimension and less than or equal to 6 times the first dimension.

12. The electronic device according to claim 1, wherein, A first reflective surface is provided within the accommodating space. The first reflective surface is disposed opposite to the light-transmitting area and surrounds the annular light guide. Light rays emitted through the light guide section and reflected by the first reflective surface before emanating from the light-transmitting area are first-view light rays. Light rays emitted through the light guide section and emanating directly from the light-transmitting area without being reflected by the first reflective surface are second-view light rays.

13. The electronic device according to claim 12, wherein, The mounting base includes a cover plate and a decorative ring. The cover plate has the light-transmitting area. The decorative ring and the cover plate form the receiving space. The inner surface of the decorative ring is provided with the first reflective surface.

14. The electronic device according to claim 12, wherein, The light source assembly further includes a light-diffusing mask located within the accommodating space. The first reflective surface surrounds the light-diffusing mask, and the annular light guide is located within the light-diffusing mask. The light emitted from the light guide section, passing sequentially through the light-diffusing mask and the first reflective surface, and then exiting from the light-transmitting area, is the first viewing angle light. The light emitted from the light guide section, passing through the light-diffusing mask, and then exiting directly from the light-transmitting area without being reflected by the first reflective surface, is the second viewing angle light.

15. The electronic device according to claim 14, wherein, The mounting base includes a cover plate and a decorative ring. The inner surface of the decorative ring is provided with the first reflective surface. The light-diffusing cover has a receiving groove on the side facing the cover plate, and the annular light guide is located in the receiving groove. The cover plate includes a light-shielding layer and a light-transmitting element. The light-transmitting element and the decorative ring form the receiving space. The light-transmitting element has a first area and a second area. The first area surrounds the second area. The first area is the light-transmitting area. The second area is provided with the light-shielding layer, which covers the opening of the receiving groove.

16. The electronic device according to claim 15, wherein, The light source assembly further includes a reflective film disposed at the bottom of the receiving groove, the reflective film having a second reflective surface disposed opposite to the annular light guide.

17. The electronic device according to claim 12, wherein, In the direction of extension of the light-transmitting area toward the light source assembly, the first reflective surface is inclined toward the center of the receiving space.

18. The electronic device according to claim 17, wherein, The angle between the plane containing the light-transmitting area and the first reflective surface is between 15° and 25°.

19. The electronic device according to claim 12, wherein, The first reflective surface is provided with a plurality of reflective protrusions, which are arranged at intervals along the circumference of the first reflective surface, and a reflective gap is formed between any two adjacent reflective protrusions.

Images